CVE-2025-49855 WordPress Meks Flexible Shortcodes plugin <= 1.3.7 - Cross Site Scripting (XSS) Vulnerability
An attacker can inject malicious scripts via DOM-based XSS in the Meks Flexible Shortcodes plugin, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-49855?
CVE-2025-49855 is a medium-severity cross-site scripting vulnerability in Meks Flexible Shortcodes, published on 17 Jun 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Meks Meks Flexible Shortcodes meks-flexible-shortcodes allows DOM-Based XSS.This issue affects Meks Flexible Shortcodes: from n/a through <= 1.3.7.
Weakness: CWE-79
Which versions are affected by CVE-2025-49855?
How do I fix CVE-2025-49855?
No fix has been published for CVE-2025-49855 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-49855 being exploited?
There is no known exploitation of CVE-2025-49855 in the wild and no public exploit code.
Sources
Also known as GHSA-h4q8-78vh-qmc2.